@if (shouldRun()) {
  <div class="example-header">Content before</div>
  <cdk-virtual-scroll-viewport scrollWindow itemSize="50">
    <div *cdkVirtualFor="let item of items" class="example-item">{{item}}</div>
  </cdk-virtual-scroll-viewport>
  <div class="example-footer">Content after</div>
}

@if (!shouldRun()) {
  <div>Please open on StackBlitz to see result</div>
}
